Note 11 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	2016		2015		2014
Domestic	$	69,159	$	54,150	$	53,597
Foreign		5,348		9,450		10,553
Income before income taxes	$	74,507	$	63,600	$	64,150

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	2016			2015		2014
Current:
Federal	$	12,979		$	14,797	$	13,383
State		3,514			2,669		3,151
Foreign		1,932			1,475		3,563
Total current		18,425			18,941		20,097
Deferred:
Federal		8,872			4,562		3,264
State		1,222			512		399
Foreign		(596	)		216		360
Total deferred		9,498			5,290		4,023
Income Tax Expense	$	27,923		$	24,231	$	24,120

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2016			2015
Deferred Tax Assets
Allowance for bad debt	$	1,008		$	831
Accrued paid time off		2,592			2,416
Accrued bonus		55			149
Foreign net operating loss (NOL) carry forward		1,371			933
Federal/state net operating loss (NOL) carry forward		3,010			6,458
Stock option compensation		4,292			4,792
Deferred rent		5,423			5,376
Deferred compensation		3,662			2,908
Foreign tax credits		2,631			1,914
State tax credits		1,784			1,339
Federal tax credits		225			225
Foreign exchange		5,349			1,879
Accrued liabilities and other		3,378			2,643
		34,780			31,863
Less: Valuation Allowance		(1,131	)		(933	)
Total Deferred Tax Assets		33,649			30,930
Deferred Tax Liabilities
Retention		(1,684	)		(1,860	)
Prepaid expenses		(1,654	)		(1,040	)
Payroll taxes		(617	)		(502	)
Unbilled revenue		(8,728	)		(8,093	)
Depreciation		(6,664	)		(7,186	)
Amortization		(51,842	)		(44,867	)
Deferred gain and o ther		(1,574	)		(708	)
Total Deferred Tax Liabilities		(72,763	)		(64,256	)
Total Net Deferred Tax Liability	$	(39,114	)	$	(33,326	)

Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward [Table Text Block]

Unrecognized tax benefits at January 1, 2014	$	702
Increase (decrease) in unrecognized tax benefits		—
Unrecognized tax benefits at December 31, 2014		702
Decrease attributable to settlements		(174	)
Increase attributable to tax positions taken during a prior period		12
Decrease attributable to lapse of statute of limitations		(140	)
Unrecognized tax benefits at December 31, 2015		400
Increase attributable to tax positions taken during a prior period		925
Decrease attributable to lapse of statute of limitations		(140	)
Unrecognized tax benefits at December 31, 2016	$	1,185

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2016			2015			2014
Taxes at statutory rate		35.0	%		35.0	%		35.0	%
State taxes, net of federal benefit		3.9	%		3.9	%		4.2	%
Foreign tax rate differential		(0.1	)%		(0.3	)%		(0.6	)%
Other permanent differences		0.8	%		1.9	%		2.0	%
Prior year tax adjustments		(1.0	) %		(1.9	)%		(2.3	)%
Unrecognized tax benefits		1.0	%		—			—
Valuation Allowance Release		(0.3	) %		—			—
Equity-based Compensation		(1.0	) %		—			—
Tax credits		(0.8	)%		(0.5	)%		(0.7	)%
Taxes at effective rate		37.5	%		38.1	%		37.6	%